1655323141 has 4 divisors (see below), whose sum is σ = 1693819072. Its totient is φ = 1616827212.

The previous prime is 1655323129. The next prime is 1655323147. The reversal of 1655323141 is 1413235561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1413235561 = 19 ⋅74380819.

It is a cyclic number.

It is not a de Polignac number, because 1655323141 - 2¹⁷ = 1655192069 is a prime.

It is a super-2 number, since 2×1655323141² = 5480189402260211762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655323147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19247901 + ... + 19247986.

It is an arithmetic number, because the mean of its divisors is an integer number (423454768).

Almost surely, 2^1655323141 is an apocalyptic number.

It is an amenable number.

1655323141 is a deficient number, since it is larger than the sum of its proper divisors (38495931).

1655323141 is an equidigital number, since it uses as much as digits as its factorization.

1655323141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38495930.

The product of its digits is 10800, while the sum is 31.

The square root of 1655323141 is about 40685.6625975294. The cubic root of 1655323141 is about 1182.9351284802.

The spelling of 1655323141 in words is "one billion, six hundred fifty-five million, three hundred twenty-three thousand, one hundred forty-one".